Blank screen error detected in the app

I have come up with a simple idea for my app. Users can input text, which will then be displayed and saved in the database. However, I am facing an issue where the display shows up blank. I will now share the essential parts of the code to give you a clear picture.

For my server :

// Dependencies
var express = require('express');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var expressSession = require('express-session');
var mongoose = require('mongoose');
var hash = require('bcrypt-nodejs');
var path = require('path');
var passport = require('passport');
var localStrategy = require('passport-local').Strategy;
var meetupsController = require('./meetups-controller');

// Connect to MongoDB
mongoose.Promise = require('bluebird');
mongoose.connect('mongodb://localhost/mean-auth');

// User schema/model
var User = require('./models/user.js');

// Create an instance of Express
var app = express();

// Require routes
var routes = require('./routes/api.js');
app.get('/api/meetups', meetupsController.list);
app.post('/api/meetups', meetupsController.create);

// Define middleware
app.use(express.static(path.join(__dirname, '../client')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(require('express-session')({
    secret: 'keyboard cat',
    resave: false,
    saveUninitialized: false
}));
app.use(passport.initialize());
app.use(passport.session());
app.use(express.static(path.join(__dirname, 'public'));

// Configure Passport
passport.use(new localStrategy(User.authenticate()));
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());

// Routes
app.use('/user/', routes);

app.get('/', function(req, res) {
  res.sendFile(path.join(__dirname, '../client', 'index.html'));
});

// Error handlers
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

app.use(function(err, req, res) {
  res.status(err.status || 500);
  res.end(JSON.stringify({
    message: err.message,
    error: {}
  }));
});

app.use(bodyParser());
app.use('/js', express.static(__dirname + '/client/js'));

// REST API

module.exports = app;

Main Angular Controller:

var myApp = angular.module('myApp', ['ngRoute','ngResource']);

myApp.config(function ($routeProvider) {
  $routeProvider
    .when('/', {
      templateUrl: 'partials/main.html',
      access: {restricted: true}
    })
    // Other route configurations omitted for brevity
});

myApp.run(function ($rootScope, $location, $route, AuthService) {
  // Run function logic
});

myApp.controller('meetupsController', ['$scope', '$resource', function ($scope, $resource) {
  // Controller logic for managing meetups
}]);

HTML Partial Code:

<body>
  <div id='main' ng-controller="loginController">
      <!-- Main form and post stream -->
  </div>
  <div ng-controller="meetupsController">
     <!-- Meetup information section -->
  </div>
</body>

If anyone can offer assistance on resolving the blank display issue within the app, it would be greatly appreciated.

Answer №1

It's unclear what you mean by "displays blank", but there could be a problem with these particular lines:

Meetup.query(function (results) {
  $scope.meetups = results;
});

$scope.meetups = []

If $scope.meetups is set to results, it's possible that this value is being overwritten with $scope.meetups = []. Keep in mind that the $resource will resolve asynchronously, so assignments may not occur in the exact order they are written. You might want to try deleting the line containing $scope.meetups = [].

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